I think the antlers, teak coloured wood and grey tweed give masculinity here and balances out the duck egg blue. Also, I think monochrome textiles and industrial style lighting works. I'd go bolder with the accessories than what they have here tho!
Annie Sloan Wall Paint in Duck Egg Blue. This greenish soft blue is reminiscent of Rococo French and Swedish interiors, perfect for walls. Wall Paint is a tough, water-based household paint that takes whatever life throws its way.
BEHR Premium Plus Ultra 8 oz. #490F-4 Gray Morning Interior/Exterior Paint Sample, Grays